In the title compound, [MnCl2(C13H19N3O)], the MnII ion is pentacoordinated in a distorted square-pyramidal geometry. The coordination environment is defined by the N,N0,N00- tridentate Schiff base ligand and one Cl atom in the basal positions and one Cl atom in the apical position. In the crystal, intermolecular C—H Cl hydrogen bonds link the molecules into a three-dimensional network. An intramolecular C— H Cl hydrogen bond is also observed.